// Header
#include <conio.h>
#include <stdio.h>
#include <math.h>
#include<string.h>
#include<stdlib.h>
// ====== Define ===========
// ======= Main ============
int main(){
	char* str;
	str = (char*) calloc(20, sizeof(char));
	printf("nhap xau: ");
	gets(str);
	char temp[20];
	int i = strlen(str) -1;
	int j= 0;
	while(i>=0){
		temp[j] = str[i];
		i--;
		j++;
	}
	temp[j]='\0';
	puts("xau sau khi dao nguoc la: ",puts(temp));
	//puts(temp);
	getch();

}
// ====== Implements Function

